Apparatus and method for making tubular packing-pads.



W. DIOHMANN. APPARATUS AND METHOD FOR MAKING TUBULAR PACKING PADS.

APPLICATION FILED NOV. 1, 1912.

Patented May 26, 1914.

A 3 SHEETSSHEET l.

W. DIGHMANN.

APPARATUS AND METHOD FOR MAKING TUBULAR PACKING PADS. APPLICATION FILED NOV. 1, 1912.

7 792 Patented May 26, 1914.

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QMam emf W. DIOHMANN.

APPARATUS AND METHOD FOR MAKING TUBULAR PACKING PADS.

APPLICATION FILED NOV. 1, 1912.

Patented May 26, 1914.

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o womw wc UNITED STATES PATENT OFFICE. WILLIAM DICHMANN, OF OSHKOS H, WISCONSIN, A SSIGNOR 0F ONE-HALF T0 (lHARLES A. WAKEMAN, 0F OSHKOSH, WISCONSIN.

APPARATUS ANDMETHOD FOR MAKING TUBULAR PACKING-PADS.

Specification of Letters Patent.

Patented May 26, 1914,

Application filed November 1, 1912. Serial No. 729,038.

To all whom it may) concern:

Be it known that I, WILLIAM DIorI ANN, a citizen of the United States, and resident of Oshkosh, in the county of Winnebago and State of Wisconsin, have invented certain new and useful Improvements in Apparatus and Methods for Making Tubular Packing-Pads; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention refers to tubular. packing pads, its objectbeing to providea simple, effective and rapid apparatus and method for forming such pads from continuous strips of fibrous material, preferably paper.

The invention contemplates an apparatus and method whereby an enveloping strip is passed through a standard type of tubular forming sleeve, first receiving parallel lines of glue at a predetermined distance from its edges and is then centrally coated with parafiin between the glue lines, the paraffin ex-. tending approximately the widthof the com pleted tube. A second or protecting strip is then fed from a roll upon theupper face of the enveloping strip and a third strip, after being corrugated and coated with 'adhesive material upon its under side, is piled upon the protecting strip to which it is caused .to adhere. The corrugated or embossed cushion strip, incidental to the enveloping strip being folded and lap-seamed, is also caused to adhere to the seam side of said enveloping strip, the lap-seam being supplied with adhesive material through the' medium of a glue-roller which is disposed at the discharge mouth of the'tubular sleeve. The next step in the operation is to admit.

the tube between scoring draw-rolls whereby the transverse corrugations of the cushion strip are broken down in parallel lines, the completed tube being then severed in de sired lengths by cutting means. within the scope of my invention in some instances to dispense with paratfining one face of the finished tubes.

"With therabove objects in view the inven tion consists-in what is herein shown and described with reference to the accompanying drawings and subsequently claimed.

In the drawings Figurel represents a longitudinal sectional view of an apparatus in the form of a machine embodying the mechanical elements employed in the method of forming packing pads in accordance with my lnvention; Fig. 2, a side elevation lookmg toward ,the gear side of the -machine; Flgs. 3, 4t and '5, detailed cross-sections, the sectlons being indicated by lines 3-3, 47-4: and 5--5 respectively, of Fig. 1; Fig. 6, a detailed cross-section of the discharge end of the tube-forming sleeve, the section being indicated by line 6-6 of Fig. 1; Figs. 7 and 8, cross-sections of the machine as indicated by lines'77 and 88 respectively of Fig. 1; Fig. 9, a plan view of' portions of the several strips which are combined to form the finished product; Fig. 10, a longitudinal sec- .tional view of a portion of the finished pad,

and Fig. 11, a cross-section of the same.

Referring by characters to the drawings, 1

represents longitudinal struts of a frame and mounted upon the struts at the feed end of said frame is a pair of side-plates 2 provided with bearings for trunnions-of a hollow corrugating or embossing roll 3, the corrugations of which roll as shown are longitudi na-lly disposed and adapted tomesh with corresponding corrugations of a similar hollow roll 3, the trunnioned ends of the same being j ournaled in spring-pressed boxes that are-slidably mounted in suitable apertures with which the side plates 2 are provided. Motion is imparted to the upper roll '3 through an endless belt 4 that connects a pulley that is afiixed upon one of the trunnlons of said upper roll and a similar pulley carried by a counter-shaft 5, the lower roll 3 either being driven from the upper roll by spur-gears or through their intermeshed co-rrugations. J ournaled in the side frame for- Wardly of the corrugated set of rolls is a feed-roll 6 that is preferably covered with a friction band, the same being positively driven by a chain-belt 7 that connects a sprocket-wheel carried by the lower roll- 3 and a similar sprocket-wheel that is mounted upon the shaft 7 of the roll, the said sprocket being indicated by dotted lines in Fig. 1.

A glue-distributingroller 8 is also mounted in suitable journals with which said side- 4 plates are provided, the same being revoluble in a glue-pot 8' and is interposed between the paper feed-roll and set of corrugated rolls as shown. This glue distributing roll 8 is positively driven by engagement of a sprocket-wheel carried upon its shaft'with one stretch of the chain belt 7. Located between the glue-roller 8 and feed roller 6 is an idle guide spool 9 that serves as a guide for aprotecting strip of'paper' B, which strip of paper. is wound upon a reel 10 that is mounted in suitable bearings formed in the side plates above the corrugating rolls. A second reel 10 similarly mounted upon the frame is provided for the reception of an enveloping paper strip A, which strip, as shown, passes from said reel, over an idle spool 11 and about the feed roll 6 and from thence said strip passes through a tubeforming sleeve 12 that is supported from the frame struts. The stretch of the en veloping strip A, between the spool 11 and feed roller 6, in its travel first passes over a pair of spaced glue-distributing disks 13 and thereafter overthe face of a paraflining' roller 14, whereby said strip receives parallel lines of glue at predetermined points from its edges, the strip being also paraflined intermediate of said glue lines for a width approximately equaling the width of the completed. pad. The gluing disks 13 are arranged to revolve in a suitable glue-pot 13 while the parafiin roller 14 is supplied from a well 14, which well is provided with a double wall whereby steam may be admitted for the purpose of maintaining its contents at the desired consistency. The gluing disks 13 and paraffin roller 14 are driven in the same direction and speed as that traveled by the enveloping strip A, the drive being effected throughsuitable sprocket-wheels with which said disk and-roller are provided, the said sprocket-wheels being engaged by t a chain-belt 15 that is also mountedupon a sprocket-wheel carried bythe counter-shaft 5 as indicated in Fig. 1 of, the drawings.

From the foregoing description it will be seen that the enveloping strip A constitutes the base member of the pad, upon which is first laid the reinforcing or protecting strip B. A third paper strip constituting a filler or cushion C is mounted upon an overhead reel 16, from which reel 'it is fed between the set of corrugating rolls 3 and 3', being thus transversely fluted or corrugated and from thence it travels toward the mouth of the tubular forming sleeve 12, receiving glue upon the high bottom faces of its corrugation, in its travel, by engagement with the face of the glue-roller 8. Prior to entering the mouth of the forming sleeve said corrugated strip is laid upon the upper face of. the reinforcing or protecting strip B and traveling at the same rate of speed as the.- latter, and together with the enveloping,- strip, the entire series-engage each other and enter said sleeve. The pad is folded in tube form prior to its discharge from the sleeve, being thereafter sealed longitudinally and delivered to cutting mechanism, to be 'hereinafter described, by passing between upper tively, which draw rolls in conjunction with the several driven rolls at the feed end of the apparatus serve to impart a positive feed to the three strips without appreciable tension thereon, it being borne in mind that all of said stripsare arranged to travel at the same rate of speed and that the enveloping strip in its folded form constitutes the active member of the series due to its engagement between the draw rolls. The reinforcing strip B and the transverselycor rugated cushion strip 0 are of a uniform width and approximately'equal the width of a completed pad and hence when the draw rollers gripthe upper and lower faces of the folded enveloping strip of the completed pad it is evident thatthere is no in:

effected through the glue lines that are placed on said enveloping strip by means of the disks 13. As the folded enveloping strip A passes beyond the discharge mouth of the tubular forming sleeve 12 the lapped edges thereof are arranged to receive a coating of adhesive material from an obliquely dis posed disk 18, the periphery of which disk in turn is supplied with glue through a vertically disposed revoluble disk 18 that is partly submerged in a glue-containing reservoir 19. v

The above described glue mechanism together with the forming sleeve forms no part of my invention, the same being clearly shown in a patent issued to me -March 21, 1911, for improvements in pad-makingmachines, No. 9874 10. After the lapped edges of the pad have received a coating of glue the com eted pad passes between the draw rollers 1 7, 17', the upper one of which set is provided with a series of spaced annular flanges 17 which flanges constitute scoring members, whereby as the pad travels between the rolls it is sealed and scored longitudinally at predetermined distances, to thus break down the transverse corrugations of the cushion strip 'iipon the seam side of the pad in order to render the same pliable longitudinally so .that it can be folded about any article for packing the same for shipment for protect-- 'ing' its finish. As shown the score-roller 17 is journaled in boxes which are under spring control whereby the said roller is rendered yieldable to compensate for variations in the thickness of the pad.

' 4.5 will pick up the weighted arm ,24 and rotate the .same through approximately a half worms For cutting the pads into predeterminedlengths I provide an adjustable cutting mechanism which mechanism comprises a shear roller 20 having a shaft 21 that is journaled in side-plates 2 with which the frame struts are provided at the discharge end of the machine, it being understood that said side-plates also form supports for the scoring draw rolls. Suitably 'journaled within the side plates '2 and above the shear-roller is a. cutting roller 22,. which roller carries a blade 22' that is-adapted to sever a pad with each revolution of the said roller, these rollers being in spur-gear connection. The shaft 21 of the shearroller has loosely mounted thereon a spur-- I gear wheel 23, which gear-wheel carries a pin 23' that with each revolution of the same s adapted to engage a weighted arm 24, the j same being fast upon the shear roller shaft 21. This spursgear wheel receives its mo-= p tion from a pinion 25 that is carried uponthe shaft of the lower draw roller 17 the said pinion being in meshed engagement with an idle gear-wheel 25', which in turn meshes .withthegea-r-Wheel 23. .To vary the length of cut of a pad the gear-wheel 25 is detachably supported at the end of a slotted arm 26, the opposite end of which is mounted about the shear-roller shaft 21 and held 7 in its adjusted position by means of a locking nut and its bolt 27, which bolt passes; through the slot in said arm 26, and also a slot that is disposed at a right angle thereto, the same being formed in the adjacent sideplate 2". Hence when it is desired to vary the length of cut of the pad the gear-wheel 25 may be replaced by a larger or smaller idle ear-wheel, whereby motion is trans-Jv $0 mit from the lower draw roll 17 to the gear-wheel '23 at a higher or lower speed? Hence it will be observed that witheach ro- .tation er the gear-wheel 23, in the direction i indicated by the arrow, the pin 23" thereof revolution from the position it assumes in Fig. 1 of the drawings and as said weighted arm passes through its center of gravity, by positive lift imparted thereto throughi the pin 23,-it is apparent that said arm will drop forward and describe a half revolu-l tion through its weight control and thus impart a corresponding half; revolution to the 5.5 cutting roller 22 and its blade 22', whereby the same will sever a pad and assume the position shown in Fi 1 of the drawings, the weighted arm coming to rest in the man- T ner of a pendulum. Thus it is apparent 6 that for approximatel one-half of arevolution the cutting an shearing rollers are rotated idly. and at a slow, rate of speed, the

. caused toadhereto t gravity controlled arm" serving to rapidly rotate-said members for the last half revo- 'lution whereby the knifewill sever the pad.

and clear the same, causing an intermittent cutting motion that is determined by the diameter' of the gears. It is also apparent that I may if desired, provide a suitable buffer for absorbing the shock'incidental to drop of the arm 24 to prevent the same from rocking back and forth, it being observed that the knife, in assuming its normal. position of rest, is beyond the 'path of travel of an uncut pad.

Motion is imparted to the lower draw roller 17 through a pinion 28, which pinion is mounted upon a main drive shaft 29 and meshes with a ear-wheel 28, the same being fast upon t e shaft of-the draw roller 17'. Motion is transmitted from the .main drive shaftto the counter-shaft 5 through a belt gear connection as shown.

It is apparent from the foregoing described apparatus that the three strips of aper A, B and C are all directed to the mouth of the forming tube, at which point they are piled one upon the other and that prior to their assemblage thecushion strip is crimped and the enveloping strip receives longitudinallines of adhesive material adjacent to .the edges of a solid paraflin surface, which surface is so coated for the purpose -.of preventingadhesion of the completed pad to the highly polished articles, to which it .is applied. The piled strip members are then passed through the forming sleeve and folded and glued toform a tube which is cut in the desired lengths and when so formed the cushion strip will adhere to the seam side of said tube, while the lower face of said cushion strip is caused to adhere to the reinforcing strip. Thus the corrugations are protected by two thicknesses of paper whereby there is no liability to im-' print upon the article packed, which article receives the unbroken parafiin surface of cushion strip, continually feeding the same at a uniform speed, transversely oorrugating the cushion strip, gluing the lower face of the same, gluing the upper face of the enveloping strip adjacent to its edges, thereafter causing the said strips to be iled one upon the other in their travel, fol ing and lapping the-edges of the enveloping strip about the cushion and protecting strip to form a tube, wherebly the cushion strip is e inner surface of the seam side of said enveloping strip and to the adjacent face of the protecting strip, distributing glue between the lapped edges of said enveloping strip to seal the-same, and thereafter longitudinally scoring the completed pad tobreak down the corruga- 130 tions of the cushion strip at intervals, whereby said packing is rendered longitudinally pliable.

2. A method of forming tubular packing pads consisting of providing a flat enveloping strip, a flat protecting strip and a flat cushion strip, continually feeding the same at a uniform speed, transversely corrugating the cushion strip, gluing the lower face of the same, gluing the upper face of the en; veloping strip adjacent to its edges, paraflining said enveloping strip between its glued surfaces, thereafter causing the said strips to be piled one upon the other in their travel, folding and lapping the edges of the.

enveloping strip about the cushion and protecting strip to form a tube, whereby the cushion strip is caused to adhere to the inner surface of the seam side of said enveloping strip and to the adjacent face of the protecting "strip, distributing glue between the lapped ends of said enveloping strip to seal the same, and thereafter longitudinally scoring the completed pad to' break down the corrugations of the cushion strip thereof at intervals, whereby said packing is rendered longitudinally pliable.

' 3. A method of forming tubular packing.

pads consistingof providing a flat enveloping strip, a flat protecting strip and a flat cushion strip, continually feeding the same at a uniform speed, transversely corrugating the cushion strip, luing the lower of said enveloping strip and to the adjacent face of the protecting strip, distributing glue between the lapped ends. of said enveloping strip to seal the same, and thereafter longitudinally scoring the completed pad to break down the corrugations of the cushion strip thereof at intervals, whereby said packing is rendered longitudinally pliable.

at. In an apparatus for forming tubular packing pads from strips of paper having a tubular forming sleeve, an enveloping strip carrying reel, a protecting strip carrying reel, anda cushion st-rip carrying reel; the combination of a pair of corrugating rolls interposed between the cushion strip carrying reel and sleeve mouth between which said cushion strip is adapted to travel, a glue distributing means interposed between the corrugating rolls and sleeve mouth over which the said cushion strip is adapted to travel, glue distributing means adapted to engage the under side of the enveloping strip at a predetermined distance from its edges, spools arranged to guide the enveloping strip, protector strip and cushion strip strip carrying'reel, a protecting strip carrying reel, and a cushion strip carrylng reel; the combination of a pair of corrugating rolls interposed between the cushion strip carrying reel and sleeve mouth between which said cushion strip is adapted to travel, a gluedistributing means interposed -between --the corrugating rolls and sleeve mouth over which the said cushionstrip is adapted to travel, spools arranged to guide the enveloping strip, protector stripand cushion strip in their mentioned order one upon the other to the mouth of the aforesaid forming sleeve, enveloping strip edge gluing meansdisposed at the discharge end of the tubular forming sleeve, andscoring draw rolls disposed beyond said edge gluing means. I

6. In an apparatus for forming tubular packing pads from strips of paper having a tubular forming sleeve, an enveloping strip carrying reel, a protecting strip carrying reel, and a cushion strip carrying reel; the combination of a pair of corrugating rolls interposed between the cushion strip carrying reel and sleeve mouth between which said cushion strip is adapted to travel, a gluedistributing means interposed between the corrugating rolls and sleeve mouth over which said cushion strip is adapted to travel, paraffin distributing means adapted to engage the under side of the enveloping strip intermediate of its edges, spools ar ranged to guide the enveloping strip, protector strip and cushion strip in their mentioned order one upon the other to the mouth of the aforesaid formingsleeve, enveloping 'stripedge gluing means disposed at the discharge end of the tubular forming sleeve, and scoring draw rolls disposed beyond said edge gluing means.

7. A method of forming tubular packing pads consisting of providing a flat envelop ing strip and a fiat cushion strip, continually feeding the strips at a uniform speed, transversely corrugating the cushion strip and gluing the high points of the lower face of the same during the travel of said strip, thereafter causing the strips to be piled one upon the other in their travel, folding and lapping the enveloping. strip about the cor- 'rugated cushion strip to form a tubular jacket for the latter whereby said cushion strip, distributing glue between the lapped edges of said enveloping strip to seal the strip is caused to adhere to the enveloping same, and thereafter longitudinally scoring the completed pad to break down the corrugations of the cushion strip at intervals whereb said packing is rendered longitudinally 'able.

8. E method of forming tubular packing pads consisting of providing a fiat envelop mg strip and a transversely corrugated cushion strip, continuously feeding the strips at a uniform speed in the same direction, depositing glue uponone of said strips dur' its travel, thereafter causing the strips to be piled one upon the otherin their travel, whereby the same are adhesively secured, folding" and lapping the free edges of the enveloping strip about the cushion strip to form a tubular jacket for the cushion strip, distributing glue between the lapped edges of the aforesaid enveloping stmp to seal the same and thereafter longitudinally scoring the completed pad to break down the cor'ru ations of the cushion strip at intervals w ereby said packing pad is rendered pliable longitudinally.

In testimony that I claim the foregoing I have hereunto set my hand at Oshkosh in the county of Winnebago and State of Wisconsin in the presence of two witnesses.

WILLIAM DICHMANN.

Witnesses:

JOHN Honwn', 

